<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="root"></div>
    <script crossorigin src="https://unpkg.com/react@16/umd/react.development.js"></script>
    <script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.development.js"></script>
    <script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
 <script type="text/babel">
 
    let root = document.getElementById('root')
    function Container(props) {
        return (
            <div>
                <div>{props.top}</div>
                {props.children}
                <div>{props.bottom}</div>
            </div>
        )
    }
    function Top() {
        return <h3>上边</h3>
    }
    function Bottom() {
        return <h3>下边</h3>
    }
    ReactDOM.render(<Container top={<Top/>} color="red" bottom={<Bottom/>}><h3>中间</h3></Container>,root)
</script>
</body>
</html>